Sarun Wongpatcharapakorn sarunw

How to Deploy a Rails App to DigitalOcean with Ubuntu 14.04, Phusion Passenger & Nginx, Postgres, and Capistrano

1. Setup DigitalOcean Droplet

Choose Server Image

Choose Size (if this is a hobby app you can probably get away with the smallest)

Preamble

On OS/X Sierra, after recently running a brew update I started receiving the error message Sorry, you can't use byebug without Readline when trying to run some rake tasks in my ruby project folder. I observed this in projects and gems that include byebug or pry in their Gemfile or gem.spec. I've found in my googling that many begin encountering this error message after running a brew update but there are other triggering conditions as well.

>> rake aws:show_config
WARN: Unresolved specs during Gem::Specification.reset:
      mime-types (>= 0)
WARN: Clearing out unresolved specs.
Please report a bug if this causes problems.
 Sorry, you can't use byebug without Readline. To solve this, you need to

	class Cart {
	var items: [Product]
	var paymentMethod: PaymentMethod

	// Old implementation
	var deliveryAddress: String
	var shippingOption: ShippingOption
	}

	class OrderSummaryViewController: UIViewController {
	override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
	if segue.identifier == "checkout" {
	let vc = segue.destination as! ShippingOptionViewController
	vc.cart = cart // pass along cart information to next view controller
	}
	}
	}

	class OrderSummaryViewController: UIViewController {
	override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
	if segue.identifier == "checkout" {
	let vc = segue.destination as! DeliveryAddressViewController
	vc.cart = cart // pass along cart information to next view controller
	}
	}
	}

	extension KeyedEncodingContainer {

	mutating func encode(_ value: UIImage,
	forKey key: KeyedEncodingContainer.Key) throws {

	let imageData = value.jpegData(compressionQuality: 1)
	let prefix = "data:image/jpeg;base64,"

	guard let base64String = imageData?.base64EncodedString(options: .lineLength64Characters) else {
	throw EncodingError.invalidValue(value, EncodingError.Context(codingPath: codingPath, debugDescription: "Can't encode image to base64 string."))

	func prepare(for segue: UIStoryboardSegue, sender: Any?) {
	if segue.identifier == "showDetail" {
	if let indexPath = tableView.indexPathForSelectedRow {
	let object = fetchedResultsController.object(at: indexPath)
	let controller = (segue.destination as! UINavigationController).topViewController as! DetailViewController
	controller.detailItem = object
	controller.navigationItem.leftBarButtonItem = splitViewController?.displayModeButtonItem
	controller.navigationItem.leftItemsSupplementBackButton = true
	}
	}

	enum ImageEncodingQuality: CGFloat {
	case png = 0
	case jpegLow = 0.2
	case jpegMid = 0.5
	case jpegHigh = 0.75
	}

	extension KeyedEncodingContainer {

	mutating func encode(_ value: UIImage,

	struct Base64ImageWrapper: Codable {
	let image: UIImage

	public init(from decoder: Decoder) throws {
	let container = try decoder.singleValueContainer()
	let base64String = try container.decode(String.self)
	let components = base64String.split(separator: ",")
	if components.count != 2 {
	throw DecodingError.dataCorruptedError(in: container, debugDescription: "Wrong data format")
	}

	var float: Float = 0.01
	var floatSum: Float = 0
	for i in 0..<100 {
	floatSum += float
	}

	floatSum
	floatSum == 1

	var double: Double = 0.01